تقرير
Einstein-Cartan Cosmologies
| العنوان: | Einstein-Cartan Cosmologies |
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| المؤلفون: | Medina, Sergio Bravo, Nowakowski, Marek, Batic, Davide |
| المصدر: | Annals of Physics 400 (2019) 64-108 |
| سنة النشر: | 2018 |
| المجموعة: | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| مصطلحات موضوعية: | General Relativity and Quantum Cosmology, High Energy Physics - Theory |
| الوصف: | Cosmologies based on General Relativity encompassing an anti-symmetric connection (torsion) can display nice desirable features as the absence of the initial singularity and the possibility of inflation in the early stage of the universe. After briefly reviewing the standard approach to the cosmology with torsion, we generalize it to demonstrate that several theories of torsion gravity are possible using different choices of the diffeomorphic invariants in the Lagrangians. As a result, distinct cosmologies emerge. In all of them it is possible that the universe avoids the initial singularity and passes through an initial accelerated expansion. Differences between these theories are highlighted. Comment: 41 pages, 21 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.aop.2018.11.002 |
| URL الوصول: | http://arxiv.org/abs/1812.04589 |
| رقم الأكسشن: | edsarx.1812.04589 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.aop.2018.11.002 |
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